Answer : C
Explanation
Typhoid is caused by the bacterium, Salmonella typhi.
Typhoid is caused by the bacterium, Salmonella typhi.
Most abundant element in earth crust is Oxygen.
Metamorphosis refers to the changes in form that occur as an insect approaches adulthood.
Amphibians spend their lives in the water and on land.
Many insects have compound eyes consisting of multiple lenses (up to tens of thousands). Insects include cockroaches, beetles, bees and butterflies, all of which have compound eyes.